Abstract

VILLADA, Juan D.; LOAIZA, Juliana  and  CHAUR, Manuel N.. Electronic and electrochemical properties of a grid-like structure of Zn(II). Rev. acad. colomb. cienc. exact. fis. nat. [online]. 2019, vol.43, n.167, pp.273-283. ISSN 0370-3908.  https://doi.org/10.18257/raccefyn.822.

A novel and highly soluble bis(hydrazone) was synthesized and characterized by different spectroscopic means. This compound was used as a ditopic ligand for the self-assembly of a grid-like complex using Zn2+ as metal cation. The structure of this compound was fully confirmed by NMR (1D and 2D). The electronic and electrochemical properties were studied using cyclic voltammetry, Osteryoung square wave voltammetry, and UV-Vis spectroscopy. The present work highlights the use of NMR spectroscopy as a tool to describe and analyse the formation of grid-like complexes based on the rotation of the phenyl group attached to the pyrimidine ring. Furthermore, the electrochemical results showed that the bis(hydrazone) 3 exhibits several different redox processes that are affected by the interaction with the metal cation as observed for the grid-like complex. Although the electrochemical processes are all irreversible, this article aims to be an initial study in the search for supramolecular complexes that can be used as electrochemical switches. © 2019. Acad. Colomb. Cienc. Ex. Fis. Nat.

Keywords : Bis(hydrazones); Metallogrids; Supramolecular chemistry; Coordination chemistry.

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